BEGIN:VCALENDAR VERSION:2.0 PRODID:-//132.216.98.100//NONSGML kigkonsult.se iCalcreator 2.20.4// BEGIN:VEVENT UID:20250625T054149EDT-1471J2FuGX@132.216.98.100 DTSTAMP:20250625T094149Z DESCRIPTION:Heegaard Floer homology and graph manifolds.\n\nBetween you and me\, I always wanted to be a geometric group theorist. On that note\, the re is a conjectural relationship between Heegaard Floer homology and left- orderable three-manifold groups\, which is now known to hold for all graph manifolds. That is\, a closed orientable graph manifold Y is an L-space i f and only if the fundamental group of Y is not-left-orderable. The latter condition can be hard to check in general\, but in this setting the inequ ality dimHF(Y)>|H_1(Y)| provides a certificate that the group pi_1(Y) is l eft-orderable. I'll explain what these symbols mean in an attempt to sell the machinery to geometric group theorists.\n DTSTART:20161012T190000Z DTEND:20161012T200000Z LOCATION:Room 920\, Burnside Hall\, CA\, QC\, Montreal\, H3A 0B9\, 805 rue Sherbrooke Ouest SUMMARY:Liam Watson\, Université de Sherbrooke URL:/mathstat/channels/event/liam-watson-universite-de -sherbrooke-263320 END:VEVENT END:VCALENDAR